Improvement in fire-screens



A. POMERGY.v

FIRE-SCREEN.

No.177,353. Patnted May 16,1876.l

riga, Figi?. rig. 5.

N.FETERS. PHOTO-LITHOGRAPHE-R, WASHINGTON. D C.

UNITE 'rares A'rnlv'r Genion. l

JOHN A. POMEROY, on OINOINNATI, OHIO.

IMPROVEMENT IN FIRE-SCREENS.

Specification forming part of Letters Pat-eut No. 77,353, dated May 16,1876; application iiled Y November 4, 1875.

control a corresponding number of wire-gauze vanes, that radiate fromthe center of said pintle, and form themselves, when expanded, into acomplete and continuous' screen, capable of being readily contracted insuch a manner as to give free access to the rebasket without removingthe screen from the grate,"the device for operating the screen beingconstructed with a hollow tube open at its ends for the reception ofcool air, which will keep it cool enough to handle.

Iiithe accompanying drawings7 Figure l is an elevation of a tire-gratewith my screen attached thereto, the screen being represented asexpanded. Fig. 2 is an elevation of a lire-grate withvthe screenattached thereto, and the screen represented as contracted. Fig. 3 is asectional elevation through a tire-grate, showing the manner ofattaching 'the screen to the basket. Fig. 4 is `a plan view of thewashers and pintle, showing the Washers as they appear when the screenis contracted. Fig. 5 is a section of the same. Fig. 6 is a face view ofa washer, showing the manner of attaching the vane thereto.

lA represents a mantel and grate, of which Bis the basket. Connected tothe pintle O at one end is a device for attaching the screen D to thebasket B. A rod, E, which is part of the pintle O, drops a suitabledistance below the said pintle, and is then formed into the shape of theletter T, with stationary hooks F F on the horizontal bar thereof, andan adjustable hook, Gr, on the vertical bar. The hooks F F rest on thetop bar of the basket B, and the hook G is ixed to either of the otherbars by means of the slot H and thumb-screw I. On the pintle G (as shownin Figs; 4 and 5) are mounted eight washers,JJ1 J2 J3 J4 J5 J6 J7, eachone overlaying the one next to it in such a manner as to move overadistance of one-seventh of its circumf'erence before coming in contactwith and operating upon it, by means of the projections K K1 K2 K3` K4K5 K6, moving through spaces L Ll L2 L8 L4 L5 L6, previous to actingupon the projections M M1 M2 M3 M4 M5 M6 on the washers next succeeding.Each of the wire-gauze vanes N N1 N2 N3 N4 N5 N6 VNT are constructedwith a hollow tube, O, of

ring, S, open at its ends and held in position by the pin T, fitsloosely into the socket U, which is a continuation of the collar R.

AThe ring S operating upon the collar R, which is connected to thewasher J, controls the movements of the series of washers which act oneupon the other until the washer J6 comes in contact with/the washer JFIat the points K6 and M6. The screen D is then-expanded, as shown in Fig.l, the washer J7 bcing tirmly secured t0 the collar V, which is partofthe rod E. The screen D is then a fixture until the operation isreversed.

What I claim as new, and desire to secure by Letters Patent, is-

A sucient number of vanes N to form, when expanded, a continuous screen,in combination with a corresponding number. of washers J, mounted uponand oscillating on pintle C, fitted with collars It and V and ring S, inconnection with some suitable device for attaching the same to afire-grate, substantially as and for the purpose specified.

In testimony whereof I have hereunto set my hand this 25th day ofOctober, 1.87 5.

JOHN A. POMEROY. Witnesses:

JNO. S.' MURPHY, YHENRY MILLWARD.

